/* SPDX-License-Identifier: BSD-2-Clause */

/**
 * @file
 * @brief ls Shell Command Implementation
 */

/*
 * Copyright (C) 2014 embedded brains GmbH & Co. KG
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <errno.h>
#include <stdio.h>
#include <string.h>

#include <rtems/shellconfig.h>

#include "internal.h"

static void error(const char *s, int eno)
{
  printf("%s: %s\n", s, strerror(eno));
}

static void print_cmd(const rtems_shell_cmd_t *shell_cmd)
{
  if (rtems_shell_can_see_cmd(shell_cmd)) {
    mode_t m = shell_cmd->mode;

    printf(
      "%c%c%c%c%c%c%c%c%c %5u %5u %s\n",
      (m & S_IRUSR) != 0 ? 'r' : '-',
      (m & S_IWUSR) != 0 ? 'w' : '-',
      (m & S_IXUSR) != 0 ? 'x' : '-',
      (m & S_IRGRP) != 0 ? 'r' : '-',
      (m & S_IWGRP) != 0 ? 'w' : '-',
      (m & S_IXGRP) != 0 ? 'x' : '-',
      (m & S_IROTH) != 0 ? 'r' : '-',
      (m & S_IWOTH) != 0 ? 'w' : '-',
      (m & S_IXOTH) != 0 ? 'x' : '-',
      (unsigned) shell_cmd->uid,
      (unsigned) shell_cmd->gid,
      shell_cmd->name
    );
  }
}

static int rtems_shell_main_cmdls(int argc, char **argv)
{
  const rtems_shell_cmd_t *shell_cmd;

  if (argc <= 1) {
    shell_cmd = rtems_shell_first_cmd;

    while (shell_cmd != NULL) {
      print_cmd(shell_cmd);

      shell_cmd = shell_cmd->next;
    }
  } else {
    int i;

    for (i = 1; i < argc; ++i) {
      const char *cmd = argv[i];

      shell_cmd = rtems_shell_lookup_cmd(cmd);

      if (shell_cmd != NULL) {
        print_cmd(shell_cmd);
      } else {
        error(cmd, ENOENT);
      }
    }
  }

  return 0;
}

rtems_shell_cmd_t rtems_shell_CMDLS_Command = {
  .name = "cmdls",
  .usage = "cmdls COMMAND...",
  .topic = "misc",
  .command = rtems_shell_main_cmdls
};